Budget & Cash Flow Planner
Comprehensive budgeting tool combining the 50/30/20 rule, emergency fund tracking, savings goals, and net worth calculation. Get a complete picture of your financial health for singles, couples, or families.
About this calculator
This calculator merges four financial planning frameworks that are usually kept in separate tools, giving one combined view of monthly cash flow, net worth, emergency fund readiness, and a specific savings goal. Every income source is summed into total monthly income, and every expense is sorted into Needs or Wants before being compared against the classic 50/30/20 targets — 50% of income to essentials, 30% to discretionary spending, 20% to savings and extra debt payments — with Monthly Cash Flow reporting what's left after all three buckets, including whatever you've already allocated to savings, are subtracted from income. Emergency Fund Goal is calculated from your Needs total specifically, not total expenses including discretionary spending, on the theory that a true emergency only requires covering essential costs; the Recommended Emergency Fund figure shown separately, which scales with household type, is contextual guidance rather than a value that automatically overrides the target you actually set.
Months to Full Emergency Fund and the Savings Goal's required monthly contribution both use standard compound-interest annuity math against your entered savings APY, projecting forward rather than assuming a flat, interest-free accumulation. The Financial Health Score combines emergency fund progress, savings rate, debt-to-income ratio, cash flow sign, and net worth sign into a single 0-100 figure — a useful directional signal, but a simplified composite rather than a substitute for a comprehensive financial review.
Financial Disclaimer
This calculator is for educational purposes only and does not constitute financial advice. Results are estimates based on the inputs provided. Consult a qualified financial advisor before making investment or financial planning decisions.
Step 1 of 14
How to Use This Calculator
- Select your household type and number of dependents.
- Enter all monthly income sources: primary salary, secondary income, side income, and investment income.
- Enter all fixed monthly expenses: housing, utilities, groceries, insurance, transportation, healthcare, childcare, and minimum debt payments.
- Enter variable/discretionary expenses: dining out, entertainment, subscriptions, shopping, and hobbies.
- Review your total income, total expenses, and monthly surplus or deficit.
How the result changes with Primary Monthly Salary (After Tax)
| Primary Monthly Salary (After Tax) | Monthly Cash Flow | Net Worth |
|---|---|---|
| $2,500.00 | -$2,100.00 | $43,000.00 |
| $3,750.00 | -$850.00 | $43,000.00 |
| $7,500.00 | $2,900.00 | $43,000.00 |
| $12,500.00 | $7,900.00 | $43,000.00 |
What each input means
- Household Type
- Select your household type to get tailored recommendations.
- Number of Dependents
- Children or other dependents you support financially.
- Primary Monthly Salary (After Tax)
- Your main take-home pay after taxes.
- Secondary Salary (After Tax)
- Spouse or partner's take-home pay.
- Side Income / Freelance
- Gig work, freelance, or side business income.
- Investment / Dividend Income
- Monthly dividends, interest, or rental income.
- Other Income
- Alimony, child support, government benefits, etc.
- Housing (Rent/Mortgage)
- Monthly rent or mortgage payment.
- Utilities
- Electric, gas, water, internet, phone.
- Groceries
- Food and household essentials.
- Insurance
- Health, auto, home, life insurance premiums.
- Transportation
- Gas, public transit, car maintenance.
- Healthcare
- Medications, copays, medical expenses.
- Childcare / Education
- Daycare, tuition, school expenses.
- Minimum Debt Payments
- Minimum payments on loans and credit cards.
- Dining Out
- Restaurants, takeout, coffee shops.
- Entertainment
- Movies, concerts, events, streaming services.
- Subscriptions
- Streaming, gym, magazines, apps.
- Shopping (Non-Essential)
- Clothes, electronics, home goods beyond essentials.
- Travel / Vacation
- Monthly set-aside for trips and vacations.
- Hobbies
- Sports, crafts, gaming, etc.
- Other Discretionary
- Any other non-essential spending.
- Monthly Savings
- Amount transferred to savings accounts monthly.
- Retirement Contributions
- 401(k), IRA, or other retirement account contributions.
- Investment Contributions
- Brokerage, stocks, ETFs, crypto.
- Extra Debt Payments
- Payments above minimums to pay off debt faster.
- Cash & Savings Accounts
- Checking, savings, money market accounts.
- Taxable Investments
- Brokerage accounts, stocks, bonds, ETFs.
- Retirement Accounts
- 401(k), IRA, 403(b), pension value.
- Real Estate Value
- Current market value of owned property.
- Vehicle Value
- Current resale value of cars, boats, etc.
- Other Assets
- Jewelry, collectibles, business equity.
- Mortgage Balance
- Remaining balance on home loan.
- Auto Loan Balance
- Remaining balance on car loans.
- Student Loan Balance
- Federal and private student loans.
- Credit Card Debt
- Total credit card balances.
- Personal Loans
- Unsecured personal loans.
- Other Debts
- Medical debt, back taxes, etc.
- Emergency Fund Target
- Target months of expenses to save.
- Savings Account APY
- Annual percentage yield on savings.
- Savings Goal Amount
- Specific savings target (house, car, vacation).
- Savings Goal Timeframe
- Target months to reach savings goal.
What each result means
- Household Type
- Your selected household type, including dependents for a family household.
- Monthly Cash Flow
- Money remaining after all expenses and savings.
- Financial Health Score
- Overall financial health rating.
- Net Worth
- Total assets minus total liabilities.
- Needs (Target: 50%)
- Percentage of income spent on essential expenses.
- Wants (Target: 30%)
- Percentage of income spent on discretionary expenses.
- Savings (Target: 20%)
- Percentage of income going to savings/investments.
- Emergency Fund Progress
- Percentage of emergency fund goal achieved.
- Debt-to-Income Ratio
- Monthly debt payments as percentage of income.
- Debt-to-Asset Ratio
- Liabilities as percentage of assets.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersHousehold Type = 0, Number of Dependents = 0, Primary Monthly Salary (After Tax) = 5000, Secondary Salary (After Tax) = 0 = 42 input(s) provided
- Calculate Monthly Cash FlowMonthly Cash Flow400 = $400
- Calculate Net Worth43000 = $43,000
- Calculate Financial Health ScoreFinancial Health Score100 = 100
- Calculate RatingRatingExcellent = Excellent
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why is the Emergency Fund Goal based on Needs alone rather than my total monthly expenses?
A genuine emergency — job loss, a medical event, an unexpected repair — typically only requires covering essential costs like housing, utilities, groceries, and minimum debt payments, not discretionary spending on dining out or entertainment. Basing the goal on Needs alone produces a more realistic, achievable target than one that assumes you'd keep spending at your full discretionary level during a crisis.
Does the Recommended Emergency Fund figure automatically become my savings target?
No — it's shown purely as contextual guidance based on your household type, scaling from 3 months for a single person up to 6 months for a family with dependents. Your actual Emergency Fund Goal is driven entirely by the Emergency Fund Target months you enter yourself, so adjust that input directly if you want your goal to match the recommendation.
Why might my Monthly Cash Flow be positive even if my Savings Percent looks low?
Savings and investment contributions are subtracted as a planned outflow before Monthly Cash Flow is calculated, so a positive cash flow figure represents money left over beyond even what you've already allocated to savings. It's an unallocated surplus on top of your tracked savings rate, not a sign that your savings percentage itself is understated.
How exactly does the Financial Health Score reward a higher savings rate?
It adds your actual savings percentage directly to the score, capped at a maximum of 20 points, rather than an all-or-nothing bonus for crossing a specific threshold the way the debt-to-income component works. A 10% savings rate contributes 10 points toward the score, and anything at or above 20% contributes the full 20-point maximum.
Does a positive Net Worth guarantee a good Financial Health Score?
It contributes a modest 5 points out of the total 100, but the score weighs emergency fund progress, savings rate, debt-to-income ratio, and cash flow more heavily. Someone could show a positive net worth from illiquid assets like real estate while still carrying a weak score overall if their monthly cash flow is negative or their emergency fund is underfunded.
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